ESP32 Forum

Posted: **Fri Jan 03, 2020 11:49 am**

Hi all,

I've seen a HW design lately where an 3.3V accelerometer is powered only by using GPIO34 of the Pico D4.

My question: Can this work? I thought GPIO34 is for input only? Can you still use it as a power supply for low power devices (less than 40mA)? Can I control this pin for activating/deactivating the accelerometer?

Thanks in advance & Greetings,
Timm

Posted: **Sat Jan 04, 2020 8:12 pm**

GPIO34 is input only, and it doesn't have an internal pull-up resistor. Unless the design includes an external pull-up resistor on this pin, it should not be able to source any current.

Posted: **Wed Jan 29, 2020 2:36 pm**

Hi! Okay, thanks for the answer

Greetings, Timm

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